Biological invasion and protected areas
Protected areas (parks) are not immune to being invaded by alien plants and animals, but the ecological risks can be high when this happens. Alien and invasive species enter parks via a wide range of pathways and many hypotheses have been proposed to explain what makes a park either susceptible or resistant to invasion. Our research in this area focuses on both drivers and patterns of alien and invasive species invasion, the long term consequences of the integration of multiple alien species into native communities and the management implications thereof.
Examples of our work in this area:
- Spear, D., Foxcroft, L.C., Bezuidenhout, H. & McGeoch, M.A. 2013. Human population density explains alien species richness in protected areas. Biological Conservation 159, 137-147. 10.1016/j.biocon.2012.11.022
- Le Roux, P.C., Ramaswiela, T., Kalwij, J.M., Shaw, J.D., Ryan, P.G., Treasure, A.M., McClelland, G.T.W., McGeoch, M.A. & Chown, S.L. 2013. Human activities, propagule pressure and alien plants in the sub-Antarctic: Tests of generalities and evidence in support of management. Biological Conservation 161, 18-27. 10.1016/j.biocon.2013.02.005
- McGeoch, M.A., Spear, D., Kleynhans, E.J. & Marais, E. 2012. Uncertainty in invasive alien species listing. Ecological Applications 22, 959-971. 10.1890/11-1252.1